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N0. 626,94l. Q Patented lune l3, I899. G. W. STAFFORD.

BOTTOM BOARD FOR JACQUARD MAGIHNES.

(Application filed Jan. 23, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

GEORGE W. STAFFORD, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE CROMPTON & KNOWLES LOOM WORKS, OF SAME'PLAOE.

BOTTOM BOARD FORJACQUARD MACHINES.

SPECIFICATION forming part of Letters Patent No. 626,941, dated June 13, 1899 Application filed January 23, 189 9. Serial No. 703,062. (No model.)

To all whom it nuty concern: holes 44 has operated to speedily form grooves Be it known that I, GEORGE W. STAFFORD, in such material extending transversely of a citizen of the United States, residing at such holes, into which grooves the said lower Providence, in the county of Providence and ends would enter, so that notwithstanding 55 State of Rhode Island, have invented certain the fact that heretofore the upper ends of the new and useful Improvements in Bottom holes have been counterbored to receive those Boards for Jacquard-lllachines, of which the portions of the neck-cords which are looped following is a specification, reference being around the lower ends of the uprights the had therein to the accompanying drawings. wear resulting from the contact of the up- 60 The aim of the invention is in general to rights with the opposite sides of the counterprovide a bottom board of improved characbored portions of the holes soon has permitted ter and construction and more especially to the uprights to sink sufficiently into the upobviate wear of the bottom board from conper portion of the bottom board to carry the tact of the bottom orlower ends of the hooked neck-cord at both sides of the upright into 65 I 5 uprights therewith and cutting or wear of the contact with the material of the bottom board neck-cords where they are connected with the at the bottom of the counterbore, and from said bottom or lower ends of the uprights. this has resulted comparatively speedy wear The invention consists in an improved conand cutting or breakage of the neck-cords. struction which will be described first with In carrying the present invention into ef- 7o reference to the accompanying drawings, in feet wires or strips 5 5 are laid parallel with which latter is illustrated the best embodieach other on opposite sides of each line of ment thereof which has yet been contrived, holes 4 4. Then the uprights 2 2 are perafter which the characteristic features of the mitted to descend into their lowest position, invention will be particularly pointed out and the bottom ends of the uprights rest on -these 7 5 distinctly defined in the claims at the close of wires or strips 5 5. These Wires or strips 5 5 this specification. protect the bottom board from wear resulting In the accompanying drawings, Figure 1 from the contact of the bottom ends of the upshows in plan part of the length of a bottom rights therewith. The wear of the wires or board having the invention applied thereto. strips 5 5 is very slight and takes place very 0 Fig. 2 is a view in vertical longitudinal seoslowly, and since the said wires or strips pretion on the plane thatis indicated by the dotvent the bottom ends of the uprights from ted line 2 2 of Fig. 1. Fig. 3 is a viewin vercutting into the material ofthe bottom board tical transverse section on the plane that is and thereby descending sufficiently far to indicated by the dotted line 3 3 of Fig. 1. In bring the portions of the neck-cords which 3 5 Fig. 3 portions of several of the hooked uppass around the said ends of the uprights into rights which are employed in a jacquard-macontact with the material of the bottom board chine are shown, together with portions of the around the upper ends of the holes 4 4 it folneck-cords which are connected therewith. lows that the wear and cutting of the said In the drawings, 1 designates the bottom neck-cords heretofore arising from such con- 40 board. The uprights are designated 2 2, and tact are prevented. In providing for the rethe neck-cords are designated33. The holes ception of the portions of the neck-cords which are made vertically through the bottom which pass around the bottom ends of the upboard 1 for the passage of the neck-cords 3 3 rights it is preferred to form parallel grooves are designated 4 4. As customary, the said 6 6 along the upper face of the bottom board 45 holes 4 4 herein are formed in lines or series 1, each of such grooves intersecting the upextending parallel with one another and in per ends of the holes 4 4 of one line or series the direction of the length of the bottom of the said holes, as shown, and preferably board. also the grooves 6 6 exceed in width the di- Heretofore the contact of the bottom or ameterof the holes44. The wires or strips55 50 lower ends of the uprights with the material are located at opposite sides of each of the of the bottom board at the upper ends of the grooves 6 6, and while in some cases the wires or strips may be located in the grooves themselves it has been found most convenient to place the said wires within rabbets, as 7 7, which are formed along opposite sides of each of the grooves (3 6. The wires or strips 5 5 may be held in place in any convenient and suitable manner. The preferred means of holding them in place consists of screws 8 8, which are driven at intervals between the pair of wires or strips corresponding with each groove into portions of the bottom board below the groove, as shown. The head of each screw overlaps and engages with both wires or strips, and thereby serves to secure both of the latter in place. The screws which are located at intermediate points in the length of each series or line of the holes 4 4 preferably are slabbed off on opposite sides thereof, as at 9 9, Fig. 1, in order that the distance which necessarily is left between two adjacent holes 4 4 of the said series or line for the reception of each of such intermediate screws may be kept as small as possible.

\Vhat is claimed as the invention is- The combination with the bottom board for jacquard machines, having the holes therethrough, and having the wires or strips on opposite sides of the said holes, of the uprights having the rounded lower ends making contact ,with and resting upon the said wires or strips when the uprights occupy their lowest position, and the neck-cords applied to the said ends and passing through the said holes, substantially as described.

2. The improved bottom board for jacquard-machines, having the holes therethrough, the groove intersecting the upper ends of the said holes, the rabbets at opposite sides of the said groove, the wires or strips in the said rabbets, and the screws inserted between the said wires or strips and holding the latter in place, "substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE W. STAFFORD.

Witnesses:

E. F. GREENE,

W. G. ANTHONY. 

